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GW_CLASS: Cosmological Gravitational Wave Background in the Cosmic Linear Anisotropy Solving System
Florian Schulze, Lorenzo Valbusa Dall'Armi, Julien Lesgourgues +5
The anisotropies of the Cosmological Gravitational Wave Background (CGWB) retain information about the primordial mechanisms that source the gravitational waves and about the geome…
New Horizons for Fundamental Physics with LISA
K. G. Arun, Enis Belgacem, Robert Benkel +138
The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders about the fundamental theory of nature at play in the extreme gravity regime, where the gravitatio…
Cuscuton Inflation
Nicola Bartolo, Alexander Ganz, Sabino Matarrese
We study the impact of (generalized) cuscuton models on standard single scalar field inflation. Generalized cuscuton models are characterized by spatial covariant gravity where a s…
Prospects for Fundamental Physics with LISA
Enrico Barausse, Emanuele Berti, Thomas Hertog +318
In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental…
Towards a viable effective field theory of mimetic gravity
Alexander Ganz, Nicola Bartolo, Sabino Matarrese
We discuss mimetic gravity theories with direct couplings between the curvature and higher derivatives of the scalar field, up to the quintic order, which were proposed to solve th…
Gravity in mimetic scalar-tensor theories after GW170817
Alexander Ganz, Nicola Bartolo, Purnendu Karmakar +1
We derive the most general mimetic scalar-tensor theory assuming a healthy "seed" action and accounting for the constraints on the speed of gravitational-wave propagation arising f…